@charset "UTF-8";
* {
  list-style: none;
  margin: 0;
  padding: 0;
  text-decoration: none;
  /*滚动条整体样式*/
  /*滚动条里面小方块*/
}

* ::-webkit-scrollbar {
  width: 10px;
  /*高宽分别对应横竖滚动条的尺寸*/
  height: 1px;
}

* ::-webkit-scrollbar-thumb {
  box-shadow: inset 0 0 5px rgba(0, 0, 0, 0.2);
  background: #49b1f5;
}

body {
  position: relative;
  font-size: 16px;
  line-height: 2;
  color: #555;
  background: #fff;
}

body .header {
  height: 40vh;
}

body header {
  overflow: hidden;
  position: relative;
  z-index: 10000;
  clear: both;
  width: 100%;
  height: 100vh;
  background-attachment: fixed;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  transition: all 0.5s;
}

body header h1 {
  position: fixed;
  top: 0;
  left: 0;
  font-size: 22px;
  display: inline-block;
  line-height: 36px;
  color: #fff;
  border: 2px solid #fff;
  border-left: 0;
  border-right: 0;
  transition: all .5s;
}

body header .nav {
  background-color: rgba(255, 255, 255, 0.5);
}

body header .nav h1 {
  color: #000;
  border-color: #000;
}

body header nav {
  position: fixed;
  width: 100%;
  top: 0;
  right: 0;
  display: inline-block;
  top: -5px;
  transition: all 0.5s;
}

body header nav ul {
  float: right;
  margin: 8px 0 0 0;
  padding-left: 0;
  text-align: center;
}

body header nav ul li {
  display: inline-block;
  margin-left: 5px;
  max-width: 62px;
}

body header nav ul li a {
  text-align: center;
  width: 42px;
  color: #fff;
  text-decoration: none;
  outline: none;
  word-wrap: break-word;
  padding: 0 10px;
  border: none;
  border-radius: 2px;
  display: block;
  font-size: 13px;
  line-height: inherit;
  transition-duration: 0.2s;
  transition-timing-function: ease-in-out;
  transition-delay: 0s;
}

body header nav ul li a span {
  display: none;
}

body header nav ul li a:hover {
  background: #e1e1e1;
  border-bottom-color: #222;
  color: #222;
  outline: 0;
}

body header nav ul li a:hover span {
  display: inline;
}

body header nav ul li .active {
  background: #e1e1e1;
  border-bottom-color: #222;
  color: #222;
  outline: 0;
}

body header nav ul li .active span {
  display: inline;
}

body header nav ul li button {
  width: 34px;
  height: 34px;
  outline: 0;
  border: 0;
  position: absolute;
  top: 10px;
  right: 15px;
  background-color: transparent;
  cursor: pointer;
  z-index: 1000;
}

body header nav ul li button svg {
  width: 50%;
  height: 50%;
}

body header nav ul li input {
  height: 24px;
  padding: 5px;
  transform: scaleX(0);
  transition-duration: 0.2s;
  transition-timing-function: ease-in-out;
  transition-delay: 0s;
}

body header nav ul li:hover {
  max-width: max-content;
}

body header nav ul li:hover input {
  transform: scaleX(1);
}

body header .header-title {
  position: absolute;
  top: 43%;
  padding: 0 0.5rem;
  width: 100%;
}

body header .header-title h2 {
  color: #fff;
  text-align: center;
  text-shadow: 2px 2px 4px rbga(0, 0, 0, 0.3);
  line-height: 1.5;
  font-size: 30px;
}

body header .header-btn {
  position: absolute;
  bottom: 10px;
  text-align: center;
  width: 100%;
  height: 20px;
  font-weight: 700;
  font-family: 'Franklin Gothic Medium', 'Arial Narrow', Arial, sans-serif;
  cursor: pointer;
}

body header .header-btn i {
  width: 30px;
  height: 30px;
  font-size: 30px;
  display: inline-block;
  transform: rotate(90deg);
  color: rgba(255, 255, 255, 0.4);
  transition-duration: .3s;
  transition-timing-function: ease-in-out;
  transition-delay: 0s;
}

body header .header-btn:hover i {
  color: white;
}

.top-bottom {
  display: none;
  position: fixed;
  bottom: 20px;
  right: 20px;
  cursor: pointer;
  outline: 0;
  border: 0;
}
